Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos modelos têm potência máxima de saída de 162kw (220 ps) a 6.300 rpm?
 ###Tabelas: CREATE TABLE specifications (specifications_id AUTO_INCREMENT PRIMARY KEY, Model VARCHAR, Engine VARCHAR, Displacement VARCHAR, Max. power output VARCHAR, Peak torque VARCHAR, 0–100km/h,s 0-62mph,s VARCHAR, Top speed VARCHAR, CO 2 emissions VARCHAR, Years VARCHAR, Note VARCHAR, Engine code VARCHAR) CREATE TABLE liverpool (liverpool_id AUTO_INCREMENT PRIMARY KEY, Round VARCHAR, Opposition VARCHAR, First leg VARCHAR, Second leg VARCHAR, Aggregate score VARCHAR) CREATE TABLE boys (boys_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Sport VARCHAR, Tournament Structure VARCHAR, # of Divisions INT, 1st Tournament INT, 2012-2013 State Tournament Location VARCHAR) CREATE TABLE crime_statistics:_1995_2011_non-homicide (crime_statistics:_1995_2011_non-homicide_id AUTO_INCREMENT PRIMARY KEY, Year INT, Population INT, Total INT, Violent INT, Property Crimes INT, Forcible rape INT, Robbery INT, Aggravated assault INT, Burglary INT, Larceny Theft INT, Vehicle Theft INT) CREATE TABLE mps_1832–1885 (mps_1832–1885_id AUTO_INCREMENT PRIMARY KEY, Election VARCHAR, 1st Member VARCHAR, 1st Party VARCHAR, 2nd Member VARCHAR, 2nd Party VARCHAR)  
SELECT COUNT Model FROM specifications WHERE Max. power output = 162kW (220 PS) at 6,300 rpm